Identification of the Most Stable Sc2C80 Isomers： Structure, Electronic Property, and Molecular Spectra Investigations  

作　　者：吴静怡 王太山 舒春英 吕鑫 王春儒 

机构地区：[1]Key Laboratory of Molecular Nanostructure and Nanotechnology,Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences(CAS),Beijing 100190,China [2]State Key Laboratory of Physical Chemistry of Solid Surfaces&Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry,College of Chemistry&Chemical Engineering,Xiamen University,Xiamen,Fujian 361005,China

出　　处：《Chinese Journal of Chemistry》2012年第4期765-770,共6页中国化学（英文版）

摘　　要：A systematic density functional theory investigation has been carried out to explore the possible structures of Sc2C80 at the BMK/6-31 G（d） level. The results clearly show that Sc2@C80-Ih, Sc2@Cso-Dsh, and Sc2C2@C78-C2v can be identified as three isomers of Sc2C80 metallofullerene with the lowest energy. Frontier molecular orbital analysis indicates that the two Sc2@C80 isomers have a charge state as （Sc〉）2@ C60 and the Sc2C2@C78 has a charge state of （Sc3＋）2 C22- @ C784-. Moreover, the metal-cage covalent interactions have been studied to reveal the dynamics of endohedral moiety. The vertical electron affinity, vertical ionization potential, infrared spectra and 13C nuclear mag- netic resonance spectra have been also computed to further disclose the molecular structures and properties.A systematic density functional theory investigation has been carried out to explore the possible structures of Sc2C80 at the BMK/6-31 G（d） level. The results clearly show that Sc2@C80-Ih, Sc2@Cso-Dsh, and Sc2C2@C78-C2v can be identified as three isomers of Sc2C80 metallofullerene with the lowest energy. Frontier molecular orbital analysis indicates that the two Sc2@C80 isomers have a charge state as （Sc〉）2@ C60 and the Sc2C2@C78 has a charge state of （Sc3＋）2 C22- @ C784-. Moreover, the metal-cage covalent interactions have been studied to reveal the dynamics of endohedral moiety. The vertical electron affinity, vertical ionization potential, infrared spectra and 13C nuclear mag- netic resonance spectra have been also computed to further disclose the molecular structures and properties.

关 键 词：METALLOFULLERENES density functional theory relative energy HOMO-LUMO gap 

分 类 号：O621.142[理学—有机化学] O561.1[理学—化学]